<?php

/**
 * Argument handler to accept a vocabulary id.
 */
class views_handler_argument_vocabulary_vid extends views_handler_argument {

    /**
     * Override the behavior of title(). Get the name of the vocabulary.
     */
    function title() {
        $title = db_result(db_query("SELECT v.name FROM {vocabulary} v WHERE v.vid = %d", $this->argument));

        if (empty($title)) {
            return t('No vocabulary');
        }

        return check_plain($title);
    }

}
